Anti-theft brass magnetic lockable ball valve for water meter,this tamper-proof valve is designed with a double-locking system,. Once secured, a special key is needed to unlock the valve. ,One end is swivel nut can connect with water meter and other compression end for PE pipes or both end with thread connection.Our innovative lockable ball valve with strainer is well received among my clietns ,DZR or lead free brass and bronze material is available as long as you have demand.